CCS
- ACM Computing Classification System
- Alexander Gillies
- CC Sabathia
- CC's
- CCS (band)
- CCS (gene)
- CCS.com
- CIF Central Coast Section
- CYLD cutaneous syndrome
- Cabinet Committee on Security
- Calculus of communicating systems
- Calvary Christian School (Covington, Kentucky)
- Canadian Cancer Society
- Canadian Cardiovascular Society
- Canadian Cue Sport Association
- Candy Crush Saga
- Capital City Service
- Capsanthin/capsorubin synthase
- Caracas
- Carbon capture and storage
- Cardcaptor Sakura
- Cardiff City Stadium
- Caroline Chisholm School
- Carroll County School District (Mississippi)
- Cartesian coordinate system
- Cases Computer Simulations
- Casino Christian School
- Casualty Clearing Station
- CeVIO Creative Studio
- Cellular Confinement Systems
- Center for Cartoon Studies
- Central Coast Section
- Centre for Civil Society
- Ceylon Civil Service
- Championship Cup Series
- China Classification Society
- China Communications Services
- Chinese Chemical Society (Beijing)
- Chinese Chemical Society (Taipei)
- Chronic Covid Syndrome
- Circuit City Stores
- Code Composer Studio
- Coded character set
- College for Creative Studies
- College of Creative Studies
- Collegiate Conference of the South
- Collision cross-section
- Columbus Catholic High School (Marshfield, Wisconsin)
- Combined Charging System
- Combined Chiefs of Staff
- Committee of Concerned Scientists
- Common Core State Standards Initiative
- Common-channel signaling
- Community Christian School (disambiguation)
- Comparative Cognition Society
- Computer Conservation Society
- Consumers Cooperative Services
- Container closure system
- Conventional Commits Specification
- Copper-clad steel
- Cornway College
- Coventry Christian Schools
- Cowbridge Comprehensive School
- Creamline Cool Smashers
- Critical code studies
- Critical community size
- Cross currency swap
- Crown Commercial Service
- GNU General Public License
- Simón Bolívar International Airport (Venezuela)
- Valor Christian Academy